840741609 has 16 divisors (see below), whose sum is σ = 1170432000. Its totient is φ = 535802256.

The previous prime is 840741599. The next prime is 840741617. The reversal of 840741609 is 906147048.

It is a happy number.

840741609 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 840741609 - 2⁸ = 840741353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (840741679) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172792 + ... + 177590.

It is an arithmetic number, because the mean of its divisors is an integer number (73152000).

Almost surely, 2^840741609 is an apocalyptic number.

It is an amenable number.

840741609 is a deficient number, since it is larger than the sum of its proper divisors (329690391).

840741609 is a wasteful number, since it uses less digits than its factorization.

840741609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7364.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 840741609 is about 28995.5446405133. The cubic root of 840741609 is about 943.8163877454.

The spelling of 840741609 in words is "eight hundred forty million, seven hundred forty-one thousand, six hundred nine".